创建任务 - Amazon Elastic Transcoder
描述请求响应错误示例

通过以下方式节省成本并获得更多功能 AWS Elemental MediaConvert

MediaConvert 是一项较新的基于文件的视频转码服务，它提供了一套全面的高级转码功能，按需费率起价为每分钟 0.0075 美元。阅读更多。

已经在使用 Amazon Elastic Transcoder？ 迁移到很简单 MediaConvert。有关更多信息，请参阅本概述，其中包含有关迁移过程的重要信息以及指向其他资源的链接。

本文属于机器翻译版本。若本译文内容与英语原文存在差异，则一律以英文原文为准。

创建任务

描述

要创建任务，请向 /2012-09-25/jobs 资源发送 POST 请求。任务一经创建就会启动。

注意

您可以将 Elastic Transcoder 配置为在任务状态发生更改时通知您，包括 Elastic Transcoder 开始和完成任务处理时，以及在 Elastic Transcoder 遇到警告或错误情况时。有关更多信息，请参阅 创建管道。

请求

语法

POST /2012-09-25/jobs HTTP/1.1
Content-Type: application/json; charset=UTF-8
Accept: */*
Host: elastictranscoder.Elastic Transcoder endpoint.amazonaws.com:443
x-amz-date: 20130114T174952Z
Authorization: AWS4-HMAC-SHA256 
               Credential=AccessKeyID/request-date/Elastic Transcoder endpoint/elastictranscoder/aws4_request,
               SignedHeaders=host;x-amz-date;x-amz-target,
               Signature=calculated-signature
Content-Length: number of characters in the JSON string
{
   "Inputs":[{
      "Key":"name of the file to transcode",
      "Encryption":{
         "Mode":"aes-cbc-pkcs7|aes-ctr|aes-gcm",
         "Key":"encrypted and base64-encoded decryption key",
         "KeyMd5":"base64-encoded key digest",
         "InitializationVector":"base64-encoded initialization vector"
      },
      "TimeSpan":{
         "StartTime":"starting place of the clip, in
            HH:mm:ss.SSS or sssss.SSS",
         "Duration":"duration of the clip, in HH:mm:ss.SSS
            or sssss.SSS"
      },
      "FrameRate":"auto|10|15|23.97|24|25|29.97|30|50|60",
      "Resolution":"auto",
      "AspectRatio":"auto|1:1|4:3|3:2|16:9",
      "Interlaced":"auto|true|false",
      "Container":"auto|aac|asf|avi|divx|flv|m4a|mkv|mov|mp2|mp3|
         mp4|mpeg|mpeg-ps|mpeg-ts|mxf|ogg|vob|wav|webm",
      "InputCaptions":{
	        "MergePolicy":"MergeOverride|MergeRetain|Override",
            "CaptionSources":[
               {
                  "Key":"name of the input caption file",
                  "Encryption":{
                     "Mode":"aes-cbc-pkcs7|aes-ctr|aes-gcm",
                     "Key":"encrypted and base64-encoded encryption key",
                     "KeyMd5":"base64-encoded key digest",
                     "InitializationVector":"base64-encoded 
                        initialization vector"
                  },
                  "Language":"language of the input caption file",
                  "TimeOffset":"starting place of the captions, in
                     either [-+]SS.sss or [-+]HH:mm:SS.ss",
                  "Label":"label for the caption"
               },
               {...}
            ]
         }
      },
      {...}
   ]
   "OutputKeyPrefix":"prefix for file names in Amazon S3 bucket",
   "Outputs":[{
      "Key":"name of the transcoded file",
      "Encryption":{
         "Mode":"s3||aes-cbc-pkcs7|aes-ctr|
            aes-gcm",
         "Key":"encrypted and base64-encoded encryption key",
         "KeyMd5":"base64-encoded key digest",
         "InitializationVector":"base64-encoded initialization vector"
      },
      "ThumbnailPattern":""|"pattern",
      "Rotate":"auto|0|90|180|270",
      "PresetId":"preset to use for the job",
      "SegmentDuration":"[1,60]",
      "Watermarks":[
         {
            "InputKey":"name of the .png or .jpg file",
            "Encryption":{
               "Mode":"s3||aes-cbc-pkcs7|
                  aes-ctr|aes-gcm",
               "Key":"encrypted and base64-encoded encryption key",
               "KeyMd5":"base64-encoded key digest",
               "InitializationVector":"base64-encoded initialization 
                  vector"
            },
            "PresetWatermarkId":"value of Video:Watermarks:Id in preset"
         },
         {...}
      ],
      "AlbumArt":[
         {
            "AlbumArtMerge":"Replace|Prepend|Append|Fallback",
            "AlbumArtArtwork":"can be empty, but not null":[
               {
                  "AlbumArtInputKey":"name of the file to use as album 
                     art",
                  "Encryption":{
                     "Mode":"s3||aes-cbc-pkcs7|
                        aes-ctr|aes-gcm",
                     "Key":"encrypted and base64-encoded encryption key",
                     "KeyMd5":"base64-encoded key digest",
                     "InitializationVector":"base64-encoded
                        initialization vector"
                  },
                  "AlbumArtMaxWidth":"maximum width of output album art
                     in pixels",
                  "AlbumArtMaxHeight":"maximum height of output album
                     art in pixels",
                  "AlbumArtSizingPolicy":"Fit|Fill|Stretch|Keep|
                     ShrinkToFit|ShrinkToFill",
                  "AlbumArtPaddingPolicy":"Pad|NoPad",
                  "AlbumArtFormat":"jpg|png"
               },
               {...}
            ]
         },
         {...}
      ],
      "Captions":{
         "CaptionFormats":[
            {
               "Format":"cea-708|dfxp|mov-text|scc|srt|webvtt",
               "Pattern":"myCaption/file-language",
               "Encryption":{
                  "Mode":"s3||aes-cbc-pkcs7|
                     aes-ctr|aes-gcm",
                  "Key":"encrypted and base64-encoded encryption key",
                  "KeyMd5":"base64-encoded key digest",
                  "InitializationVector":"base64-encoded 
                     initialization vector"
               }
            },
            {...}
         ]
      }
   },
   {...}],
   "Playlists":[{
      "Format":"HLSv3|HLSv4|MPEG-DASH|Smooth",
      "Name":"name", 
      "OutputKeys":[
         "Outputs:Key to include in this playlist",
         ...
      ],
      "HlsContentProtection":{
          "Method":"aes-128",
          "Key":"encrypted and base64-encoded protection key",
          "KeyMd5":"base64-encoded key digest",
          "InitializationVector":"base64-encoded
                     initialization vector",
          "LicenseAcquisitionUrl":"license acquisition url",
          "KeyStoragePolicy":"NoStore|WithVariantPlaylists"
      },
      "PlayReadyDrm":{
          "Format":"microsoft|discretix-3.0",
          "Key":"encrypted and base64-encoded DRM key",
          "KeyId":"id of the DRM key",
          "KeyMd5":"base64-encoded key digest",
          "InitializationVector":"base64-encoded
                     initialization vector",
          "LicenseAcquisitionUrl":"license acquisition url"
      }
   },
   {...}],
   "UserMetadata": {
      "Key":"Value",
      "Second user metadata key":"Second user metadata value"
   },
   "PipelineId":"pipeline to use for transcoding"
}

请求参数

此操作不使用请求参数。

请求标头

此操作仅使用所有操作通用的请求标头。有关通用请求标头的信息，请参阅 HTTP 标头内容。

请求正文

请求正文中的 JSON 字符串包含 CreateJob 操作的输入对象。有关输入对象的更多信息，请参阅 您在创建 Elastic Transcoder 任务时指定的设置。

响应

语法

Status: 201 Created
				
x-amzn-RequestId: c321ec43-378e-11e2-8e4c-4d5b971203e9
Content-Type: application/json
Content-Length: number of characters in the response
Date: Mon, 14 Jan 2013 06:01:47 GMT

{
   "Job":{
      "Id":"Id that Elastic Transcoder assigns to the job",
      "Inputs":[{
         "Key":"name of the file to transcode",
         "Encryption":{
            "Mode":"aes-cbc-pkcs7|aes-ctr|aes-gcm",
            "Key":"encrypted and base64-encoded decryption key",
            "KeyMd5":"base64-encoded key digest",
            "InitializationVector":"base64-encoded initialization vector"
         },
         "TimeSpan":{
            "StartTime":"starting place of the clip, in
               HH:mm:ss.SSS or sssss.SSS",
            "Duration":"duration of the clip, in HH:mm:ss.SSS
               or sssss.SSS"
         },
         "FrameRate":"auto|10|15|23.97|24|25|29.97|30|50|60",
         "Resolution":"auto|width in pixelsxheight in pixels",
         "AspectRatio":"auto|1:1|4:3|3:2|16:9",
         "Interlaced":"auto|true|false",
         "Container":"auto|aac|asf|avi|divx|flv|m4a|mkv|mov|mp2|mp3|
            mp4|mpeg|mpeg-ps|mpeg-ts|mxf|ogg|vob|wav|webm",
         "InputCaptions":{
	        "MergePolicy":"MergeOverride|MergeRetain|Override",
            "CaptionSources":[
               {
                  "Key":"name of the input caption file",
                  "Language":"language of the input caption file",
                  "TimeOffset":"starting place of the captions, in
                     either [-+]SS.sss or [-+]HH:mm:SS.ss",
                  "Label":"label for the caption"
                  "Encryption":{
                    "Mode":"aes-cbc-pkcs7|aes-ctr|aes-gcm",
                     "Key":"encrypted and base64-encoded decryption key",
                     "KeyMd5":"base64-encoded key digest",
                     "InitializationVector":"base64-encoded initialization 
                        vector"
                  },
               },
               {...}
            ]
         }
      },
      {...}],
      "OutputKeyPrefix":"prefix for file names in Amazon S3 bucket",
      "Outputs":[{
            "Id":"sequential counter",
            "Key":"name of the transcoded file",
            "Encryption":{
               "Mode":"s3||aes-cbc-pkcs7|aes-ctr|
                  aes-gcm",
               "Key":"encrypted and base64-encoded encryption key",
               "KeyMd5":"base64-encoded key digest",
               "InitializationVector":"base64-encoded initialization vector"           
            },
            "ThumbnailPattern":""|"pattern",
            "Rotate":"auto|0|90|180|270",
            "PresetId":"preset to use for the job",
            "SegmentDuration":"[1,60]",
            "Watermarks":[
               {
                  "InputKey":"name of the .png or .jpg file",
                  "Encryption":{
                     "Mode":"s3||aes-cbc-pkcs7|
                        aes-ctr|aes-gcm",
                     "Key":"encrypted and base64-encoded encryption key",
                     "KeyMd5":"base64-encoded key digest",
                     "InitializationVector":"base64-encoded initialization 
                        vector"
                  },
                  "PresetWatermarkId":"value of Video:Watermarks:Id in 
                     preset"
               },
               {...}
            ],
            "AlbumArt":[
               {
                  "AlbumArtMerge":"Replace|Prepend|Append|Fallback",
                  "AlbumArtArtwork":"can be empty, but not null":[
                     {
                        "AlbumArtInputKey":"name of the file to use as album 
                           art",
                        "Encryption":{
                           "Mode":"s3||aes-cbc-pkcs7|
                              aes-ctr|aes-gcm",
                           "Key":"encrypted and base64-encoded encryption key",
                           "KeyMd5":"base64-encoded key digest",
                           "InitializationVector":"base64-encoded
                              initialization vector"
                        },
                        "AlbumArtMaxWidth":"maximum width of output album art
                           in pixels",
                        "AlbumArtMaxHeight":"maximum height of output album
                           art in pixels",
                        "AlbumArtSizingPolicy":"Fit|Fill|Stretch|Keep|
                           ShrinkToFit|ShrinkToFill",
                        "AlbumArtPaddingPolicy":"Pad|NoPad",
                        "AlbumArtFormat":"jpg|png"
                     },
                     {...}
                  ]
               },
               {...}
            ], 
         "Duration":"duration in seconds",
         "Width":"width in pixels",
         "Height":"height in pixels",
         "Status":"Submitted|Progressing|Complete|Canceled|Error",
         "StatusDetail":"additional information about job status",
         "Captions":{
            "CaptionFormats":[
               {
                  "Format":"cea-708|dfxp|mov-text|scc|srt|webvtt",
                  "Pattern":"myCaption/file-language",
                  "Encryption":{
                     "Mode":"s3||aes-cbc-pkcs7|
                        aes-ctr|aes-gcm",
                     "Key":"encrypted and base64-encoded encryption key",
                     "KeyMd5":"base64-encoded key digest",
                     "InitializationVector":"base64-encoded 
                        initialization vector"
                  }
               },
               {...}
            ]
         },
         "AppliedColorSpaceConversion":"None|Bt601ToBt709|
            Bt709ToBt601"
      },
      {...}
      ],
      "Playlists":[
         {
            "Format":"HLSv3|HLSv4|MPEG-DASH|Smooth",
            "Name":"name",
            "OutputKeys":[
               "Outputs:Key to include in this playlist",
               ...
            ],
            "HlsContentProtection":{
                "Method":"aes-128",
                "Key":"encrypted and base64-encoded protection key",
                "KeyMd5":"base64-encoded key digest",
                "InitializationVector":"base64-encoded
                   initialization vector",
                "LicenseAcquisitionUrl":"license acquisition url",
                "KeyStoragePolicy":"NoStore|WithVariantPlaylists"
            },
            "PlayReadyDrm":{
                "Format":"microsoft|discretix-3.0",
                "Key":"encrypted and base64-encoded DRM key",
                "KeyId":"id of the DRM key",
                "KeyMd5":"base64-encoded key digest",
                "InitializationVector":"base64-encoded
                   initialization vector",
                "LicenseAcquisitionUrl":"license acquisition url"
            }
         },
         {...}
      ],
      "UserMetadata":{
         "key1":"First user metadata value",
         "key2":"Second user metadata value"
      },
      "PipelineId":"pipeline to add the job to",
      "Status":"Submitted|Progressing|Complete|Canceled|Error"
   }
}

响应标头

此操作仅使用大多数响应通用的响应标头。有关通用响应标头的信息，请参阅 HTTP 响应。

响应正文

创建任务时，Elastic Transcoder 将返回在请求中指定的值。有关更多信息，请参阅 您在创建 Elastic Transcoder 任务时指定的设置。

此外，Elastic Transcoder 将返回以下值。

（自动）Id

Elastic Transcoder 为任务分配的标识符。您使用该值获取任务的设置或删除任务。

（自动）Outputs:Id

以 1 开头的顺序计数器，用于在当前任务的输出中标识输出。在 Output 语法中，此值始终为 1。

（自动）Outputs:Duration

输出文件的持续时间（以秒为单位），向上取整。

（自动）Outputs:Width

输出文件的宽度（以像素为单位）。

（自动）Outputs:Height

输出文件的高度（以像素为单位）。

（自动）Outputs:Status

任务中一个输出的状态。如果您只为该任务指定了一个输出，则 Outputs:Status 始终与 Job:Status 相同。如果您指定了多个输出：

  • 所有输出的 Job:Status 和 Outputs:Status 都是 Submitted，直到 Elastic Transcoder 开始处理第一个输出。

  • 当 Elastic Transcoder 开始处理第一个输出时，该输出的 Outputs:Status 和 Job:Status 都更改为 Progressing。对于每个输出，Outputs:Status 的值将保持为 Submitted，直到 Elastic Transcoder 开始处理输出。

  • Job:Status 保持为 Progressing，直到所有输出都达到终端状态，Complete 或者 Error。

  • 当所有输出都达到终端状态时，仅当所有输出的 Outputs:Status 都是 Complete 时，Job:Status 才会更改为 Complete。如果一个或多个输出的 Outputs:Status 是 Error，则 Job:Status 的终端状态也是 Error。

Status 的值为以下值之一：Submitted、Progressing、Complete、Canceled 或 Error。

（自动）Outputs:StatusDetail

进一步解释 Outputs:Status 的信息。

（自动）Outputs:AppliedColorSpaceConversion

如果 Elastic Transcoder 使用带有 ColorSpaceConversionMode 的预设对输出文件进行转码，则 AppliedColorSpaceConversion 参数会显示所使用的转换。如果在预设中未定义 ColorSpaceConversionMode，则此参数将不会包含在任务响应中。

（自动）Status

如果您为任务指定了多个输出，则为整个任务的状态。当 Elastic Transcoder 开始处理任务时，Job:Status 的值会更改为 Progressing，并且在 Elastic Transcoder 完成对所有输出的处理之前不会发生变化。处理完成后，Job:Status 更改为 Complete，如果有任何输出失败，则更改为 Error。

如果您只为该任务指定了一个输出，则 Job:Status 与 Outputs:Status 相同。

Job:Status 的值为以下值之一：Submitted、Progressing、Complete、Canceled 或 Error。

错误

有关 Elastic Transcoder 异常和错误消息的信息，请参阅 处理 Elastic Transcoder 中的错误。

注意

如果任务失败并显示 Access Denied 错误，我们建议您运行 Test Role API 操作以确定导致错误的原因。有关更多信息，请参阅 测试角色。

示例

以下示例请求会创建一个具有两个输出的任务。

示例请求

POST /2012-09-25/jobs HTTP/1.1
Content-Type: application/json; charset=UTF-8
Accept: */*
Host: elastictranscoder.Elastic Transcoder endpoint.amazonaws.com:443
x-amz-date: 20130114T174952Z
Authorization: AWS4-HMAC-SHA256 
               Credential=AccessKeyID/request-date/Elastic Transcoder endpoint/elastictranscoder/aws4_request,
               SignedHeaders=host;x-amz-date;x-amz-target,
               Signature=calculated-signature
Content-Length: number of characters in the JSON string
{
   "Inputs":[{
      "Key":"recipes/lasagna.mp4",
      "FrameRate":"auto",
      "Resolution":"auto",
      "AspectRatio":"auto",
      "Interlaced":"auto",
      "Container":"mp4",
      "InputCaptions":{
         "MergePolicy":"MergeOverride",
         "CaptionSources":[
            {
               "Key":"scc/lasagna-kindlefirehd.scc",
               "Language":"en",
               "Label":"English"
            },
            {
               "Key":"srt/lasagna-kindlefirehd.srt",
               "Language":"fr",
               "TimeOffset":"1:00:00",
               "Label":"French"
            }
         ]
      }
   }]
   "OutputKeyPrefix":"recipes/",
   "Outputs":[
      {
         "Key":"mp4/lasagna-kindlefirehd.mp4",
         "ThumbnailPattern":"mp4/thumbnails/lasagna-{count}",
         "Rotate":"0",
         "PresetId":"1351620000000-100080",
         "Watermarks":[
            {
               "InputKey":"logo/128x64.png",
               "PresetWatermarkId":"company logo 128x64"
            }
         ],
         "Captions":{
            "CaptionFormats":[
               {
                  "Format":"scc",
                  "Pattern":"scc/lasagna-{language}"
               },
               {
                  "Format":"srt",
                  "Pattern":"srt/lasagna-{language}",
               }
            ]
         }
      },
      {
         "Key":"iphone/lasagna-1024k",
         "ThumbnailPattern":"iphone/th1024k/lasagna-{count}",
         "Rotate":"0",
         "PresetId":"1351620000000-987654",
         "SegmentDuration":"5"
      },
      {
         "Key":"iphone/lasagna-512k",
         "ThumbnailPattern":"iphone/th512k/lasagna-{count}",
         "Rotate":"0",
         "PresetId":"1351620000000-456789",
         "SegmentDuration":"5"
      },
   ],
   "Playlists": [
      {
         "Format": "HLSv3",
         "Name": "playlist-iPhone-lasagna.m3u8",
         "OutputKeys": [
            "iphone/lasagna-1024k",
            "iphone/lasagna-512k"
         ]
      }
   ],
   "UserMetadata":
      {
         "Food type":"Italian",
         "Cook book":"recipe notebook"
      },
   "PipelineId":"1111111111111-abcde1"
}

示例响应

Status: 201 Created
x-amzn-RequestId: c321ec43-378e-11e2-8e4c-4d5b971203e9
Content-Type: application/json
Content-Length: number of characters in the response
Date: Mon, 14 Jan 2013 06:01:47 GMT

{
   "Job":{
      "Id":"3333333333333-abcde3",
      "Inputs":[{
         "Key":"recipes/lasagna.mp4",
         "FrameRate":"auto",
         "Resolution":"auto",
         "AspectRatio":"auto",
         "Interlaced":"auto",
         "Container":"mp4",
         "InputCaptions":{
            "MergePolicy":"MergeOverride",
            "CaptionSources":[
               {
                  "Key":"scc/lasagna-kindlefirehd.scc",
                  "Language":"en",
                  "Label":"English"
               },
               {
                  "Key":"srt/lasagna-kindlefirehd.srt",
                  "Language":"fr",
                  "TimeOffset":"1:00:00",
                  "Label":"French"
               }
            ]
         }
      }],
      "Outputs":[
         {
            "Id":"1",
            "Key":"mp4/lasagna-kindlefirehd.mp4",
            "ThumbnailPattern":"mp4/thumbnails/lasagna-{count}",
            "Rotate":"0",
            "PresetId":"1351620000000-100080",
            "Watermarks":[
               {
                  "InputKey":"logo/128x64.png",
                  "PresetWatermarkId":"company logo 128x64",
               }
            ],
            "Duration":"1003",
            "Width":"1280",
            "Height":"720",
            "Status":"Progressing",
            "StatusDetail":"",
            "Captions":{
               "CaptionFormats":[
                  {
                     "Format":"scc",
                     "Pattern":"scc/lasagna-{language}",
                  },
                  {
                     "Format":"srt",
                     "Pattern":"srt/lasagna-{language}",
                  },
                  {
                     "Format":"mov-text"
                  }
               ]
            }
         },
         {
            "Id":"2",
            "Key":"iphone/lasagna-1024k",
            "ThumbnailPattern":"iphone/th1024k/lasagna-{count}",
            "Rotate":"0",
            "PresetId":"1351620000000-987654",
            "SegmentDuration":"5",
            "Duration":"1003",
            "Width":"1136",
            "Height":"640",
            "Status":"Progressing",
            "StatusDetail":""
         },
         {
            "Id":"3",
            "Key":"iphone/lasagna-512k",
            "ThumbnailPattern":"iphone/th512k/lasagna-{count}",
            "Rotate":"0",
            "PresetId":"1351620000000-456789",
            "SegmentDuration":"5",
            "Duration":"1003",
            "Width":"1136",
            "Height":"640",
            "Status":"Complete",
            "StatusDetail":"",
            "AppliedColorSpaceConversion":"None"
         }
      ],
      "Playlists":[
         {
            "Format":"HLSv3",
            "Name":"playlist-iPhone-lasagna.m3u8",
            "OutputKeys": [
               "iphone/lasagna-1024k",
               "iphone/lasagna-512k"
            ]
         }
      ],
      "UserMetadata":
         {
            "Food type":"Italian",
            "Cook book":"recipe notebook"
         },
      "PipelineId":"1111111111111-abcde1",
      "Status":"Progressing"
   }
}